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C392C,C392D,C392E (bizhub 950i/850i)
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Contents
| Trouble type | – C392C: Fusing sensor breaks abnormality (heating detection) – C392D: Fusing sensor wire breaks abnormality (heating compensation) – C392E: Fusing sensor wire breaks abnormality (heating GND) |
| Rank | A |
| Trouble detection condition | – C392C: The heating detection thermistor AD value is higher than the threshold value longer than predetermined period of time. – C392D: The heating compensation thermistor AD value is higher than the threshold value longer than predetermined period of time. – C392E: The heating detection thermistor AD value and the heating compensation thermistor AD value are higher than the threshold value longer than predetermined period of time. |
| Trouble isolation | – |
| Relevant electrical parts | – Fusing unit – Heating roller thermistor/Edg (TH1) – Heating roller thermistor/Ctr (TH2) – CPU board (CPUB) – Base board (BASEB) |
Procedure
- Check the fusing unit for correct installation (whether it is secured in position).
- Check the open/close operation of the right door.
- Check the connector between the fusing unit-relay CN807-BASEB CN30E for proper connection and correct as necessary.
- Check CPUB for proper installation and correct as necessary.
- Replace the fusing unit.
- Replace CPUB.
- Replace BASEB.